Daily masturbation has become a daily routine for Yui, who has lost her body and confidence as much as before. Such Yui decides to go to the fitness gym to regain his old glory. However, her true purpose is to be a good-looking trainer. The trainer's guidance is a racy exercise that barely touches the etch. The act gradually escalated and Yui and the handsome trainer's secret lesson such as dildo squat, stretch fellatio, raw insertion squat began.
